Multi-rate 10-Gigabit XFP 80km Transceivers
with Digital Diagnostics
TXP1XGHL2x
Pb
Product Description
The TXP1XGHL2x XFP multi-rate fiber optic transceivers with digital diagnostics
monitoring functionality provide a quick and reliable interface for 10Gbps
applications. The diagnostic functions, alarm and warning features as described
in the XFP Multi-Source Agreement (MSA) are provided via standard I
2
C serial
interface. The transceivers are compliant with the XFP Multi-Source Agreement
and are designed to support SONET/SDH, 10G Ethernet, and 10G Fiber Channel
data rates from 9.95Gb/s to 11.09Gb/s.
Each transceiver utilizes an 1550nm electro-absorption modulated laser with an
APD receiver to support up to 80km 10G applications. The transceivers satisfy
Class I Laser Safety requirements in accordance with the U.S. FDA/CDRH and
international IEC-60825 standards.
The transceivers connect to standard 30-pad XFP connectors for hot plug capability.
This allows the system designer to make configuration changes or maintenance
by simply plugging in different types of transceivers without removing the power
supply from the host system.
The transmitter and receiver DATA interfaces are AC-coupled Current Mode
Logic (CML). LV-TTL Transmitter Disable control input and Loss of Signal output
interfaces are also provided.
The transceivers operate from +1.8V, +3.3V and +5.0V power supplies over a
operating case temperature range of -5°C to +70°C (Commercial), -5°C to +85°C
(Extended), or -40°C to +85°C (Industrial).
Features
Lead Free Design & Fully RoHS Compliant
Compliant with XFP MSA
Compliant with OC-192/STM-64
Compliant with IEEE802.3ae
Compliant with ITU-T G.709
Support 10G Fiber Channel Applications
Digital Diagnostics Monitoring
Temperature-stabilized EML Transmitter
Low Power Consumption
Wide Case Operating Temperature Range
Transmission Distance up to 80km
Absolute Maximum Ratings
Parameter
Storage Temperature
Commercial
Operating Case Temperature
1
Extended
Industrial
V
CC
2
Supply Voltage
Operating Relative Humidity
2
Input Voltage
1
2
Symbol
T
ST
T
OP
Minimum
- 40
-5
-5
- 40
0
- 0.2
- 0.2
0
0
Maximum
+ 85
+ 70
+ 85
+ 85
+ 2.0
+ 3.6
+ 6.0
85
Vcc
Units
°C
°C
V
CC
3
V
CC
5
RH
V
in
V
%
V
Case temperature is measured on top side of XFP module.
Non condensing
An Oplink Company
S0125. Rev.03. 2011.03.25
TXP1XGHL2x
Transmitter Performance Characteristics
Parameter
Operating Data Rate
Average Optical Output Power (50% duty cycle)
Transmitter OFF Power
Extinction Ratio
Center Wavelength
Spectral Width (-20dB)
1
Side Mode Suppression Ratio
Relative Intensity Noise
Reflectance Tolerance
Tx Jitter Generation (peak-to-peak)
2
Jitter Generation (RMS)
Dispersion Penalty
Optical Output Eye
1
2
(Over Operating Case Temperature Range and
V
CC
)
Minimum
9.95
- 1.0
-
8.2
1530
-
30
-
-
-
-
-
Typical
-
-
-
-
1550
-
-
-
-
-
-
-
Maximum
11.09
+ 4.0
- 45.0
-
1565
1.0
-
- 130
- 27
0.1
0.01
2.5
Units
Gb/s
dBm
dBm
dB
nm
nm
dB
dB/Hz
dB
UI
UI
dB
Symbol
B
P
O
P
OFF
ER
λ
C
Δλ
20
SMSR
RIN
ref
T
JG
P-P
JG
RMS
DP
3
@ 9.95Gb/s (BER=10
-12
)
Compliant with GR253-CORE, IEEE 803.3ae , and ITU-T G.693
Measured with OSA and 0.1nm resolution bandwidth.
Jitter generation is compliant with SONET OC-192 per GR-253 and OTU-2 per G.709.
3
Specified as the difference between the maximum receiver sensitivity and the worst case receiver sensitivity with 80km fiber.
Receiver Performance Characteristics
(Over Operating Case Temperature Range and
V
CC
)
Parameter
Operating Data Rate
Wavelength of Operation
Receiver Sensitivity
1)
Symbol
B
λ
Minimum
9.95
1260
-
- 7.0
-
- 35.0
0.5
-
Typical
-
-
-
-
-
-
-
-
Maximum
11.09
1570
- 24.0
-
- 27.0
-
-
- 27
Units
Gb/s
nm
dBm
dBm
dBm
dB
dB
@ 9.95Gb/s
Increasing Light Input
Decreasing Light Input
P
min_BB
P
max
P
los+
P
los-
-
-
Maximum Input Optical Power (10
-12
BER)
LOS Thresholds
LOS Hysteresis
Receiver Reflectance
1
Specified at BER<10
-12
Oplink Communications, Inc
2
S0125. Rev.03. 2011.03.25
TXP1XGHL2x
Electrical Interface
(Over Operating Case Temperature Range and
V
CC
)
Parameter
Differential Impedance
Differential Input Voltage Swing
Differential Output Voltage Swing
Output Rise/Fall Time (20 to 80%)
TX_Dis, P_Down/RST
XFP Interrupt, Mod_NR, RX_LOS
Symbol
Z
d
V
p-p, diff
V
p-p, D/
T
r
/T
f
V
IL
V
IH
V
OL
V
OH
Minimum
-
120
340
24
- 0.3
2.0
0
host_V
CC
- 0.5
Typical
100
-
550
-
-
-
-
-
Maximum
-
820
850
-
0.8
V
CC
+ 0.3
0.4
host_V
CC
+ 0.3
Units
Ω
mV
mV
ps
V
V
Electrical Power Supply Characteristics
Parameter
Supply Voltage
(Over Operating Case Temperature Range and
V
CC
)
Minimum
1.71
3.13
4.75
-
-
-
-
-
Typical
1.8
3.3
5.0
310
350
40
2
-
Maximum
1.89
3.47
5.25
350
750
100
3.5
1.5
W
W
mA
V
Units
Symbol
V
CC
2
V
CC
3
V
CC
5
I
CC
2
Supply Current
Power Dissipation
P_Down Power Dissipation
I
CC
3
I
CC
5
PW
PDW
XFP Transceiver Electrical Pad Layout
1
2
3
4
5
6
7
8
9
GND
VEE5
Mod_DeSel
Interrupt
TX_Dis
VCC5
GND
VCC3
VCC3
Host Board Connector Pad Layout
GND
TD+
V
EE
30
GND
29
TD+
28
TD-
27
GND
26
GND
25
RefCLK-
24
RefCLK+
23
GND
22
Vcc2
21
P_Down/RST
20
Vcc2
19
GND
18
RD+
Toward
Bezel
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
GND
5
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Toward
ASIC
TD-
GND
Mod_DeSel
Interrupt
TX_Dis
Vcc5
RefCLK+
GND
Vcc3
Vcc3
SCL
SDA
Mod_Abs
Mod_NR
RX_LOS
GND
RD+
RD-
GND
Vcc2
GND
GND
Vcc2
P_Down/RST
GND
RefCLK-
10
SCL
11
SDA
12
Mod_Abs
13
Mod_NR
14
RX_LOS
15
GND
Bottom of XFP Board
(as viewed thru top of board)
17
RD-
16
GND
Top of XFP Board
Oplink Communications, Inc
3
S0125. Rev.03. 2011.03.25
TXP1XGHL2x
Module Pin Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
25
27
28
29
30
Logic
-
-
LVTTL-I
LVTTL-O
LVTTL-I
-
-
-
-
LVTTL-I/O
LVTTL-I/O
LVTTL-O
LVTTL-O
LVTTL-O
-
-
CML-O
CML-O
-
-
LVTTL-I
-
-
PECL-I
PECL-I
-
-
CML-I
CML-I
-
Symbol
GND
V
EE
5
Mod_DeSel
Interrupt
TX_Dis
V
CC
5
GND
V
CC
3
V
CC
3
SCL
SDA
Mod_Abs
Mod_NR
RX_LOS
GND
GND
RD-
RD+
GND
V
CC
2
P_Down/RST
V
CC
2
GND
RefCLK+
RefCLK-
GND
GND
TD-
TD+
GND
Description
Module Ground
Optional -5.2V Power Supply (Not Required)
Module De-select; When held low allows module to respond to 2-wire serial interface
Interrupt; Indicates presence of an important condition which can be read over the 2-wire serial
Interface
Transmitter Disable; Turns off transmitter laser output
+5V Power Supply
Module Ground
+3.3V Power Supply
+3.3V Power Supply
2-Wire Serial Interface Clock
2-Wire Serial Interface Data Line
Indicates Module is not present. Grounded in the Module
Module Not Ready; Indicating Module Operational Fault
Receiver Loss Of Signal Indicator
Module Ground
Module Ground
Receiver Inverted Data Output
Receiver Non-Inverted Data Output
Module Ground
+1.8V Power supply
Power down; When high, requires the module to limit power consumption to 1.5W or below. 2-Wire
serial interface must be functional in the low power mode.
Reset; The falling edge initiates a complete reset of the module including the 2-wire serial interface,
equivalent to a power cycle.
+1.8V Power supply
Module Ground
Reference Clock Non-Inverted Input (Not Required)
Reference Clock Inverted Input (Not Required)
Module Ground
Module Ground
Transmitter Inverted Data Input
Transmitter Non-Inverted Data Input
Module Ground
Laser Safety: All transceivers are Class I Laser
products per FDA/CDRH and IEC-60825 stan-
dards. They must be operated under specified
operating conditions.
Oplink Communications, Inc.
DATE OF MANUFACTURE:
This product complies with
21 CFR 1040.10 and 1040.11
Meets Class I Laser Safety Requirements
Oplink Communications, Inc
4
S0125. Rev.03. 2011.03.25
TXP1XGHL2x
Host Board Termination & Coupling
TD+
+1.8V
1µH coil or
ferrite inductor
0.1
1µH coil or
ferrite inductor
0.1
1µH coil or
ferrite inductor
0.1
+
+
+
CML
INPUTS
10
0.1
20, 22
TD-
RD+
CML
OUTPUTS
+3.3V
10
0.1
8, 9
RD-
XFP
+3.3V
10
0.1
6
SCL, SDA,
Mod_Abs, Mod_NR,
Interrupt, RX_LOS
ASIC/
SerDes
+3.3V
R
+3.3V
R
+5.0V
R
All caps are in units of µF
Application Notes
Electrical Interface:
All signal interfaces are compliant with
the XFP MSA specification. The high speed DATA interface
is differential AC-coupled internally and can be directly
connected to a 3.3V SERDES IC.
RX_LOS:
The Loss of Signal circuit monitors the level of the
incoming optical signal and generates a logic HIGH when an
insufficient photocurrent is produced.
TX_Dis:
When the TX Disable pin is at logic HIGH, the
transmitter optical output is disabled. (less than -45dBm).
P_Down:
The Power Down Function pin, when held High by
the host, places the module in the standby (Low Power) mode
with a maximum power dissipation of 1.5W. This protects
hosts which are not capable of cooling higher power modules
which may be accidentally inserted. The module’s 2-wire serial
interface and all laser safety functions must be fully functional
in this low power mode. During P_Down, the module shall still
support the completion of reset Interrupt, as well as maintain
functionality of the variable power supply.
Mod_NR:
The Mod_NR is an output pin that when High,
indicates that the module has detected a condition that
renders transmitter and or receiver data invalid, shall consist
of logical OR of the following signals:
• Transmit Signal Conditioner Loss of Lock
• Transmitter Laser Fault
• Receiver Signal Conditioner Loss of Lock
Other conditions deemed valuable to the detection of fault
may be added to the Mod_NR. The Mod_NR output pin is
an open collector and must be pulled to Host_Vcc on the
host board.
P_Down/RST:
The negative edge of Reset Function signal
initiates a complete module reset.
Module Behavior During P_Down and RST:
During
execution of a reset (t_init) or while held in Power Down
mode, a module may be unable to determine the correct
value for Mod_NR and RX_LOS. These outputs as well as all
interrupt related flags, except completion of Reset flag, shall
be disregarded by the host. When the module completes
a Reset and is not in Power Down mode, the module must
represent the correct value of both signals on its outputs
before posting a completion of reset interrupt to the host.
At no time shall a module cause spurious assertion of the
Interrupt pin. When a host initially applies power to a module
with the P_Down/RST signal asserted, a module comes up in
power down mode. The module shall only assert the Interrupt
signal pin to inform the host it has completed a reset. The
completion of reset flag shall be the only interrupt source
flag set during power down mode. The host is expected to
clear this interrupt before releasing the module from the
power down mode. The transition from power down mode
to normal mode will trigger a reset of the module and result
in a 2nd module reset and a 2nd reset completion interrupt
to the host.
Power Supply and Grounding:
The power supply line should
be well-filtered. All 0.1μF power supply bypass capacitors
should be as close to the transceiver module as possible.
5
Oplink Communications, Inc
S0125. Rev.03. 2011.03.25
FPGA/CPLD
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